/Engine/Plugins/Runtime/MeshModelingToolset/Source/MeshModelingTools/Public/DrawPolygonTool.h
void UndoCurrentOperation ( const [TArray](API\Runtime\Core\Containers\TArray)< FVector3d > & ClickPointsIn, const [TArray](API\Runtime\Core\Containers\TArray)< FVector3d > & PolygonVerticesIn )